From: Ralf Baechle <ralf@linux-mips.org>
To: Wu Zhangjin <wuzhangjin@gmail.com>
Cc: linux-mips@linux-mips.org
Subject: Re: [PATCH -queue 1/2] [loongson] add basic loongson-2f support
Date: Fri, 6 Nov 2009 14:14:05 +0100 [thread overview]
Message-ID: <20091106131405.GC31392@linux-mips.org> (raw)
In-Reply-To: <e1f93f565f4cdf3385f890f1b3a633aca03c2194.1257504242.git.wuzhangjin@gmail.com>
On Fri, Nov 06, 2009 at 06:45:05PM +0800, Wu Zhangjin wrote:
> Loongson2F has built-in DDR2 and PCIX controller. The PCIX controller
> have a similar programming interface with FPGA northbridge used in
> Loongson2E.
>
> The main differences between loongson-2e and loongson-2f include:
>
> 1. loongson-2f has an extra address windows configuration module, which
> can be used to map CPU address space to DDR or PCI address space, or map
> the PCI-DMA address space to DDR or LIO address space.
>
> 2. loongson-2f support 8 levels of software configurable cpu frequency,
> which can be configured via a register(LOONGSON_CHIPCFG0). the coming
> cpufreq and standby support are based on this feature.
>
> herein, the module and the corresponding operations are abstracted to
> loongson.h.
>
> besides, the other loongson2f-specific source code are added here,
> including gcc 4.4 support, pci memory space, pci io space, dma address.
Queued for 2.6.33. Thanks!
Ralf
next prev parent reply other threads:[~2009-11-06 13:15 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-11-06 10:45 [PATCH -queue 0/2] add loongson2f support Wu Zhangjin
[not found] ` <cover.1257504242.git.wuzhangjin@gmail.com>
2009-11-06 10:45 ` [PATCH -queue 1/2] [loongson] add basic loongson-2f support Wu Zhangjin
2009-11-06 13:14 ` Ralf Baechle [this message]
2009-11-06 10:45 ` [PATCH -queue 2/2] [loongson] oprofile: avoid do_IRQ for perfcounter when the interrupt is from bonito Wu Zhangjin
2009-11-06 13:14 ` Ralf Baechle
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